【深度学习】使用opencv在视频上添加文字和标记框

2024-07-12 03:04| 来源: 网络整理| 查看: 265

深度学习识别出视频的物体之后，需要在视频上画框标记出来。

接下来介绍如何使用python在视频上画框和文字

#!/usr/bin/env python # -*- coding:utf-8 -*- import cv2 video = "demo.mp4" result_video = "demo-result.mp4" #读取视频 cap = cv2.VideoCapture(video) #获取视频帧率 fps_video = cap.get(cv2.CAP_PROP_FPS) #设置写入视频的编码格式 fourcc = cv2.VideoWriter_fourcc(*"mp4v") #获取视频宽度 frame_width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)) #获取视频高度 frame_height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)) videoWriter = cv2.VideoWriter(result_video, fourcc, fps_video, (frame_width, frame_height)) frame_id = 0 while (cap.isOpened()): ret, frame = cap.read() if ret == True: frame_id += 1 left_x_up = int(frame_width / frame_id) left_y_up = int(frame_height / frame_id) right_x_down = int(left_x_up + frame_width / 10) right_y_down = int(left_y_up + frame_height / 10) #文字坐标 word_x = left_x_up + 5 word_y = left_y_up + 25 cv2.rectangle(frame, (left_x_up, left_y_up), (right_x_down, right_y_down), (55,255,155), 5) cv2.putText(frame, 'frame_%s' %frame_id, (word_x, word_y), cv2.FONT_HERSHEY_SIMPLEX, 1, (55,255,155), 2) videoWriter.write(frame) else: videoWriter.release() break

主要用到cv2的两个函数，cv2.rectangle(图像, (矩形左上角坐标), (矩形右下角坐标), (矩形颜色), 线条粗细)

cv2.rectangle(frame, (left_x_up, left_y_up), (right_x_down, right_y_down), (55,255,155), 5)

cv2.putText(图像, 要写入的内容, (文字坐标), 字体, 字号, (字体颜色), 字体粗细)

cv2.putText(frame, 'frame_%s' %frame_id, (word_x, word_y), cv2.FONT_HERSHEY_SIMPLEX, 1, (55,255,155), 2)

【本文地址】

公司简介

联系我们